Do you also have a change in the color of your urine when you wake up in the morning, turning dark red, brown, or sometimes black? Or do you feel very tired and exhausted for no reason throughout the day? These may seem like normal things that we don't pay much attention to in our daily lives. However, sometimes these small symptoms need a little attention, as they may be hiding a rare but serious health condition. Today we are going to talk about one such blood-related condition, PNH, or `(Paroxysmal Nocturnal Hemoglobinuria)`. Although the name may sound a bit complicated, let's understand it simply.
What is PNH? Let's understand it simply
So, what is ``Paroxysmal Nocturnal Hemoglobinuria'' or PNH? It is actually a very rare blood disorder. If you look at the meaning of the name:
- "Paroxysmal" means sudden, occurring all of a sudden.
- "Nocturnal" means relating to the night.
- "Hemoglobinuria" is the presence of a blood protein called ``Hemoglobin`` in the urine. This ``Hemoglobin`` is what makes our blood look red. So, when this is excreted with the urine, the urine becomes dark in color.
Simply put, PNH is a condition in which your immune system attacks and destroys your own red blood cells . Doctors call this ``Hemolysis`` or the breakdown of red blood cells. One of the main symptoms of this is dark, red/brown urine when you urinate at night or in the early morning.
However, this dark urine is only one symptom of PNH. If this condition is not treated properly, it can lead to serious conditions such as anemia , chronic kidney disease , or blood clots in the blood vessels . Fortunately, there are now effective medications that prevent PNH from damaging blood cells.
Who can develop this?
PNH is a very rare disease. According to statistics, about 6 out of 1 million people are newly diagnosed with this disease each year. Most often, this condition is seen in both men and women between the ages of 30 and 40. However, it is also said that women are slightly more likely to develop PNH than men.
Another thing is that sometimes people with other bone marrow diseases, for example, conditions like `(Aplastic Anemia)` or `(Myelodysplastic Syndrome)`, can also develop PNH later.
What is the difference between Hemoglobinuria and Hematuria ?
You feel a little confused when you hear these two words ( confusion)- confusion, this is Tamil, I should avoid it. Let me rephrase: You may get a little confused when you hear these two words.) You may get a little confused when you hear these two words. Because in both cases, what happens is that there is a look like blood in the urine.
- Hematuria is the presence of red blood cells in your urine.
- Hemoglobinuria (this is what we see in our PNH) is the presence of a protein called hemoglobin in the urine. When red blood cells break down, this hemoglobin is released and added to the urine.
Simply put, one goes to the whole cells, and the other goes to the red substance that comes out when the cells break down.
What causes PNH? Why does this happen?
The main cause of PNH is a defect in a gene in our body. This gene defect affects the functioning of two types of blood cells, red blood cells and platelets. This starts a chain of events that leads to problems one after the other, sometimes even life-threatening conditions.
It all starts in our bone marrow . You know, the bone marrow is like the blood factory in our body. This is where stem cells are created. These stem cells later develop into red blood cells, white blood cells, and platelets.
In PNH, a mutation or change in a gene called ``PIGA`` occurs in a single stem cell. This mutated stem cell divides and produces more similarly defective stem cells. These defective stem cells then produce defective red blood cells and platelets.
How does this genetic change affect red blood cells?
Think of it this way: our immune system is like our country's defense force. One of its special forces is called the `Complement System` . Their job is to fight germs and infections that enter the body. However, sometimes the proteins in this `(Complement System)` start attacking our own healthy red blood cells by mistake.
A normal, healthy red blood cell has a protective shield-like protein coating to protect it from such attacks. The `PIGA` gene mentioned earlier helps to make this protective shield. So, when the `PIGA` gene is mutated, it can't make this protective shield properly. Then, here's what happens:
1. Attack and Breakdown: When your ``Complement System`` attacks these defenseless red blood cells, those cells easily break down and break down. All the ``Hemoglobin`` inside the red blood cells – that is, the red protein that carries oxygen – is released into the blood. Doctors call this ``Free Hemoglobin`` .
2. Failure of the cleaning system:Normally, our bodies have a substance called ``Haptoglobin'' that traps and removes this free hemoglobin. But in PNH, the number of red blood cells that are broken down is so high that this cleaning team can't keep up.
3. Nitric Oxide Deficiency: The body uses another way to manage this excess hemoglobin, and that is a chemical called nitric oxide. But this too runs out quickly. When your body doesn't have enough nitric oxide, you can suddenly experience severe, painful cramps in your stomach muscles, esophagus (the tube that runs from your throat to your stomach), and back muscles.
4. Anemia: On the one hand, when red blood cells are destroyed, on the other hand, there is a lot of pressure on the bone marrow to make new red blood cells. However, when they cannot be made at the same rate as they are destroyed, the number of red blood cells in the body decreases. This is what we call anemia .
5. Kidney damage: This excess hemoglobin also damages the kidneys. It is said that people with PNH have a six-fold increased risk of developing chronic kidney disease .
6. Dark urine: Finally, this free hemoglobin also affects the urine. Many people with PNH may notice dark urine when they urinate at night or in the early morning. This is because the concentration of hemoglobin in the urine increases, turning the urine dark.
Simply put, due to the defect in the `PIGA` gene, the protective shield of red blood cells is lost, and they are destroyed by the immune system itself, causing a chain of problems.
How does this genetic change affect platelets?
Platelets are another important type of cell in our blood. They help to stop bleeding by forming blood clots. The mutation in the PIGA gene affects the stem cells that make red blood cells as well as the stem cells that make platelets.
This causes the defective platelets to form more blood clots than normal . This means that blood clots can form in places where they are not needed, inside blood vessels. This is called `(Thrombosis)` (thrombosis). This is very dangerous, because if these blood clots travel to the brain, heart, or lungs, they can be life-threatening.
What are the symptoms of PNH?
Although the name PNH is derived from a single symptom (dark urine), many people with PNH first see a doctor because of extreme, persistent fatigue that makes it difficult for them to perform their daily activities . This is the most common presenting symptom.
Other symptoms may include:
- Difficulty breathing (`(Dyspnea)`)
- Kidney problems (e.g., decreased urination, swollen legs)
- Difficulty swallowing food (Dysphagia)
- Esophageal Spasms
- Stomach pain
- Back pain
- Male sexual dysfunction (`(Erectile Dysfunction)`)
If you have one or more of these symptoms, especially along with a change in urine color, it's best to definitely seek medical advice.
How do doctors diagnose PNH? (Diagnosis)
When you see a doctor, they will ask you about your symptoms and examine you. Then, if they suspect you have PNH, they may do some tests to confirm it.
The main ones among these are:
- Complete Blood Count (CBC w/diff): This checks for other blood problems, such as anemia and low platelet count (thrombocytopenia).
- Basic Metabolic Panel (BMP): This checks for kidney function and symptoms of chronic kidney disease.
- Urinalysis: This can detect things like the presence of hemoglobin in the urine (Hemoglobinuria) and excess iron deposition (Hemosiderosis).
- Reticulocyte Count: Reticulocytes are immature red blood cells. These are counted to see if the bone marrow is producing healthy red blood cells.
- Haptoglobin Test: This protein is responsible for removing waste products from broken red blood cells. Low levels may indicate excessive red blood cell breakdown.
- Lactate Dehydrogenase (LDH) test: LDH is an enzyme found inside red blood cells. High levels of this in the blood indicate that red blood cells are being destroyed.
- Liver Function Test: This test measures the level of bilirubin when red blood cells are broken down.
Based on the results of these tests, if the doctor has further suspicions about PNH, he may order a special blood test called ``Flow Cytometry.'' This is what can accurately identify the red blood cells that have PNH.
What are the treatments for PNH?
In the past, PNH was considered a very dangerous and difficult disease to treat. At that time, the main treatment was regular blood transfusions to treat anemia. However, people with PNH usually lived for 10 to 22 years after diagnosis. The only way to completely cure PNH was to undergo an allogeneic stem cell transplant . And that is not something everyone can do.
But, the situation is very different now!
Fortunately, there are now very effective, targeted therapies for PNH. These are called complement inhibitors.What these drugs do is stop the ``Complement System`` from attacking and destroying red blood cells.
Studies have shown that PNH patients who receive these new treatments can live a normal lifespan, just like someone without PNH. This is truly a great achievement!
Are there any side effects of the treatment?
Yes, these `(Complement Inhibitors)` drugs can have some side effects. For example, some people may experience things like headaches and nausea. However, the good news is that most of these side effects subside within a few days of starting treatment. Your doctor will tell you more about this.
Can PNH be prevented? Can it be cured?
Because PNH is caused by a genetic mutation, there is no way to prevent it.
In terms of treatment, new ``Complement Inhibitor`` drugs can stop the damage to red blood cells and platelets caused by PNH. This means that the disease can be controlled. Many PNH patients may need additional treatment for conditions such as anemia. As mentioned earlier, although a ``Stem Cell Transplant`` is possible, it is a very complex treatment. With the current drugs, the disease can be well managed and people can live a normal life.
How do you take care of yourself as someone with PNH?
Even with treatment, it is very important for you to take steps to prevent blood clots if you have PNH. For example:
- If someone with PNH has to undergo surgery , there is a risk of blood clots and excessive bleeding during the procedure. Therefore, doctors are especially careful about this.
- Pregnancy poses health risks for women with PNH, both for themselves and for their unborn child. Therefore, it is essential to be under the supervision of a specialist before and throughout pregnancy.
Your doctor will advise you on the changes you need to make in your lifestyle, the things you need to pay attention to ( attention , this is Sanskrit/Malayalam, I should avoid it. Let me rephrase: changes you need to make in your lifestyle, the things you need to pay attention to.) changes you need to make in your lifestyle, the things you need to pay attention to. It is very important to follow that advice.
Finally, the most important thing (Take-Home Message)
PNH, or ``Paroxysmal Nocturnal Hemoglobinuria'', is a rare but potentially serious blood disorder. About 20 years ago, sufferers had limited treatment options and an uncertain future.
But today, the situation is completely different! Thanks to new, modern treatments, people with PNH can preserve their blood cells, avoid serious complications, and live full, healthy lives.
If you are diagnosed with PNH, don't panic. Your doctor will explain the treatment options that are best for you. Although treatment does not completely cure PNH, it can help prevent serious health problems caused by the disease and help you live a healthy life. The most important thing is to seek medical advice as soon as possible if you have symptoms and follow the treatment exactly as prescribed.
👩🏽⚕️ Additional questions (FAQs)
💬 Is PNH (Paroxysmal Nocturnal Hemoglobinuria) a blood cancer?
No! This is not cancer, but an extremely rare, life-threatening genetic (mutation) disease. Our red blood cells (RBC) have a protective coating around them. People with PNH do not have that coating. Therefore, our own body's (Complement system) cells attack those unprotected red blood cells and rapidly destroy them (Hemolysis).
💬 Is it a symptom of black/dark coffee-colored urine in the morning?
Yes! As the name suggests, this bleeding (Nocturnal) mostly occurs during the hours of sleep at night. When the kidneys filter out the contents of the broken red blood cells, the urine that comes out in the morning becomes dark brown (bloody). But by noon, it may return to its normal yellow color.
💬 Besides blood loss, what is the most dangerous thing about this?
Even more dangerous than anemia due to bleeding is the sudden formation of blood clots (Thrombosis) in major blood vessels throughout the body due to the substances released by these destroyed red blood cells. These blood clots can travel to the brain and intestines and cause instant death!
` PNH, Paroxysmal Nocturnal Hemoglobinuria, Blood Diseases, Hemoglobinuria, Anemia, Blood Clotting, Kidney Diseases
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